Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 348
1397. BALL SOCKET, with a screwdand. V THREAD … 1398. SCREW THREADS.—StandardV thread, sharp at top and bottom. Depthequals 0.85 of the pitch. Angle 60°. U.S. S. THREAD
Mechanical movements
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